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Abstract

In order to characterize electro-optic polymer modulators, a full-vectorial
finite-difference mode solver has been developed to solve Maxwell's equation for an
optical waveguide, and a finite-element method has been employed to analyze a microwave
electrode. A systematic and detailed discussion has been presented to describe and
design a modulator about performance parameters: <i>VπL,Δ fL,
N<sub>m</sub>, α<sub>c</sub></i>, and <i>z<sub>c</sub></i> with all the
necessary design parameters: optical waveguide (width and height), electrode (width and
height), and thickness of cladding layer. We can see that most of the results are
interesting, even very different from general opinions, for example, one can observe
that <i>VπL</i> is not always reduced with an increased width of optical
waveguide. These will be helpful for an optimized design of a modulator.

References

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